In addition to our technical support (e.g. via chat), you’ll find resources on our website that may help you with your design using Dlubal Software.
Frequently Asked Questions (FAQ)
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In the case of cross-section design, RF‑CONCRETE Members or CONCRETE uses in the calculation the stress-strain diagram for reinforcing steel according to DIN EN 1992‑1‑1, 3.2.7(2)a, that is, the increasing upper part up to ftk and the strain limitation of εud = 0.025.
In RF‑CONCRETE Members or CONCRETE, there is no option to switch to the design with the horizontal part according to 3.2.7(2)b.
However, you can possibly use a user-defined material with ftk = fyk.
AnswerThe Design According to Formula column lists the equations of the standard used to carry out the design.The abbreviations stand for the following designs:CS Cross-section designST Stability analysisSE Serviceability (SLS design)The numbers directly behind it are internal information.The lower table of the intermediate values shows the design formulas with the design conditions that are relevant for the selected design.
AnswerIn SHAPE-MASSIVE, it is necessary to activate the reinforced concrete design in General Data. As soon as the design is active, you can make the corresponding settings for the design in a separate tab (Figure 01).There are three types of the design:Stress-Strain Distribution (Example 01):It is possible to determine the existing design ratio by specifying the internal forces.Design Safety (Example 02):The program determines the state of failure (ratio = 100%) and, related to this, the available safety.Design (Example 03):By specifying the maximum and the minimum diameter, or the minimum and the maximum reinforcement, it is possible to increase the reinforcement within the design.Irrespective of which one of these three methods is used, it is necessary to specify the reinforcement position and the acting internal force (Figure 02).
AnswerFor general cross-sections, also including SHAPE-THIN cross-sections, the elastic design can only be performed in RF-/STEEL EC3: Plastic interactions are only applicable to a few cross-section shapes.
AnswerIn Window 1.12 'Parameters - Members' and Window 1.13 'Parameters - Sets of Members', you can define the cross-sectional areas for tension designs according to EN 1993‑1‑1 (see figure).
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Wind Simulation & Wind Load Generation
With the stand-alone program RWIND Simulation, wind flows around simple or complex structures can be simulated by means of a digital wind tunnel.
The generated wind loads acting on these objects can be imported to RFEM or RSTAB.
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